Fluorescent lighting fixture



Aprifl 28, 1942. D. J. BILLER 2,281,346

FLUORES GENT LIGHTING FIXTURE Filed Nov. 6, 1941 Patented Apr. 28, 1942 David J. Biller, St. Louis, Mo.,

assignor to Day- Brite Lighting, Inc., St. Louis, Mo., a corporation oi Missouri Application November 6, 1941, Serial No. 418,011

4 Claims.

My invention relates to fluorescent lighting fixtures of the so-called exposed. troii'er type provided with louvers and objects to simplify and strengthen such constructions and improve the appearance thereof. Other objects and advantages will appear herein'after.

The invention consists principally in mounting the louvers of an exposed troffer light fixture in vertical slots in the side walls of the reflector housing and in providing the lower margins of said side walls with upwardly rebent lips concealing the ends of the louvers that project through the slots. The invention further consists in the fluorescent lighting fixture and in the parts and combinations and arrangements of parts hereinafter described and claimed.

in the accompanying drawing,

Fig. 1 is a perspective view, looking from below, of a louvered fluorescent lighting fixture em-- bodying my invention,

Fig. 2is an end elevation,

Fig. 3 is a side elevation, with a portion of one side wall broken away and one of the louvers shown in section,

Fig. 4 is a cross-sectional view on the line tt in Fig, 3,

Fig. 5 is a cross-sectional view on the line 5-5 of Fig. 3; and

Fig. 6 is a cross-sectional view on the line 5-8 in Fig. 4.

A wiring housing, indicated generally by A is provided with a brace i for securing it against a ceiling. Said wiring housing A is of generally triangular section with its base 2 disposed toward the ceiling and includes a main body member 3, V-shaped socket saddles or supporting strips 4 near each end that have hooked ends 5 disposed in slots in said housing member 8 and a wiring cover strip 8 of ll-section secured to said socket saddles t as by screws l. The lower edges of the body 3 of said wiring housing have horizontal outturned flanges 8a. The wiring cover 8 has flat portions to disposed along said flanges 3a and upturned marginal lips 6b. Said wiring housing A is secured to end plates 8 as by means of brackets having one flange 9 welded to said end plates and another flange it to which the wiring housing A is secured as by screws H and nuts l2. Socket members it mounted on said socket saddles 4 project angularly downward near each end plate 8 and fluorescent light tubes M are mounted in said sockets.

The end plates 8 are provided with tabs i 5 near their outer edges that are bent inwardly it has for its principal and to which are secured, as by rivets IS, the side walls ll of the trough reflector housing member. Said side walls I l are provided with vertical slots l8 near their lower margins into which project ears l9 on the ends of louver members 20. The side wall members H are provided with outwardly and upwardly rebent lips 2| whose free edges 22 are disposed above the level of the louver mounting slots l8 and bent into close proximity to the side walls I 1. Thus, the projecting ends of said louvers 20 are concealed and,.light is prevented from passing through the louver mounting slots it out into the room. The louvers 2|] may be removed individuall'y by tilting them at one edge and swinging them'clear of the side walls i1.

The side walls I! are provided with outwardly and upwardly curved beaded upper edges 23. Said upper edges 23 stop short of the tops of the end plates 8 and of the wiring housing A. The lights it and the vertex portion of the tapering wiring cover strip 6 constituting the central portion of the wiring housing A are disposed below the level of the upper edges of the side walls Il. Thus, ligh'tmay pass toward the cell-e ing, but the lights it themselves are not visible through the spaces between the upper edges of the side walls and the wiring housing.

The above described construction has important advantages. The side walls it are made strong and rigid by the upwardly rebent lips 2| and said lips conceal the ends of the louvers 20 and prevent the disagreeable effect of light passing through the louver mounting slots it.

The louvers 20 are easily removable. Obviously, numerous changes may be made without departing from the invention and I do not wish to be limited to the precise construction shown.

What I claim is:

1. A lighting fixture of the trough reflector housing type, comprisingend plates with projecting tabs near their margins, side walls secured to said tabs, said side walls stopping short of the tops of said end plates, tubular lights extending longitudinally of said reflector housing below the level of the tops of said side walls, a wiring housing extending from end plate to end plate above said lights having portions projecting outwardly beyond said side walls and spaced above fiector walls extending between end plates with their upper edges below the tops 0! said end plates, a wiring housing of generally triangular shape in cross-section extending between end plates above said side walls and with its central portion depending below the level of the upper edges of said side walls, elongated tubular lights mounted on the sides of said wiring houslng, said side walls having rebent lower marginal lips and having slots in the area concealed by said lips and louvers having end tabs extending into said slots.

3. A lighting fixture comprising a wiring housing body with a base adapted to be disposed along a ceiling and with downwardly converging sides, nd plates, angle brackets securing said end plates and said sides of said wiring housing body together. V-shaped strips near the ends of said wiring housing body supported by hooked portions disposed in slots provided therefor near the lower edges of said sides, a V-shaped wiring cover strip secured to said supporting strips, socket members projecting angularly downward irom said supporting strips, tubular lights supported in said socket members, side reflector walls extending from end plate to end plate and secured thereto, said side walls having outturned beaded upper edges disposed above the level of said lights and spaced from said sides of said wiring housing, said side reflector walls having vertical slots near their lower edges and louvers having ears on their ends extending into said slots to support said louvers, the lower edges of said side reflector walls being bent outwardly and upwardly to form lips sealing the exposed ends of said louver members.

4. A lighting fixture comprising a wiring housing body with a base adapted to be disposed along a ceiling and with downwardly converging sides, end plates, angle brackets securing said end plates and said sides'o! said wiring housing body together, the lower edge portions 01 said sides having outturned horizontally disposed flanges, V- shaped strips near the ends of said wiring housing body supported by hooked portions disposed in slots provided therefor near the lower edges of said sides, a V-shaped wiring cover strip secured to said supporting strips, said wiring cover strip having flat portions engaging said'flanges oi said housing sides and having upturned marginal lips, socket members projecting angularly downward from said supporting strips, tubular lights supported in said socket members, side reflector walls extending from end plate to end plat and secured thereto, said side walls having outturned beaded upper edges disposed above the level of said lights and spaced from said sides of said wiring housing, said side reflector walls having vertical slots near their lower edges and louvers having ears on their ends extending into said slots to support said louvers, the lower edges of said side reflector walls being bent outwardly and upwardly to form lips sealing the exposed ends of said louver members.

DAVID J. BILLER. 

